When sourcing Smith Meter Distributors, you must prioritize accuracy and repeatability, typically requiring a linearity of ±0.15% or better. Key technical factors include the flow range (GPM/LPM), pressure rating (ANSI 150/300/600), and viscosity compatibility. Ensure the meter features a double-case design to isolate the measuring element from pressure-induced stresses, and verify that the rotor materials are compatible with the specific fluid (e.g., crude oil, refined products, or chemicals) to prevent premature wear.